/*
 * Copyright (c) 2008 CO-CONV, Corp. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _SYS_RWLOCK_H_
#define _SYS_RWLOCK_H_

/* A wrapper of NDIS_RW_LOCK */
struct rwlock {
	struct lock_object	lock_object;
	NDIS_RW_LOCK		rw_lock;
	LOCK_STATE		rw_lock_state[MAXIMUM_PROCESSORS];
	int			locked;
};

#ifdef _KERNEL

#define RWLOCK_NOPROFILE	0x00000001

void rwlock_init(struct rwlock *, const char *, const char *, int);
void _rwlock_destroy(struct rwlock *, const char *, int);
void _rwlock_acquire(struct rwlock *, int, const char *, int);
void _rwlock_release(struct rwlock *, const char *, int);

#define rwlock_destroy(lock) \
    _rwlock_destroy((lock), __FILE__, __LINE__)

#define rwlock_acquire(lock, how) \
    _rwlock_acquire((lock), (how), __FILE__, __LINE__)

#define rwlock_release(lock) \
    _rwlock_release((lock), __FILE__, __LINE__)
#endif
#endif
